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Subject[PATCH] brcmfmac: avoid duplicated suspend/resume operation
From 04d3fa673897ca4ccbea6c76836d0092dba2484a Mon Sep 17 00:00:00 2001
From: Zhonghui Fu <zhonghui.fu@linux.intel.com>
Date: Tue, 20 Jan 2015 11:14:13 +0800
Subject: [PATCH] brcmfmac: avoid duplicated suspend/resume operation

WiFi chip has 2 SDIO functions, and PM core will trigger
twice suspend/resume operations for one WiFi chip to do
the same things. This patch avoid this case.

Acked-by: Arend van Spriel <arend@broadcom.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
---
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 9880dae..618b545 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -1139,11 +1139,17 @@ void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
static int brcmf_ops_sdio_suspend(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio_dev *sdiodev;
mmc_pm_flag_t sdio_flags;
+ struct sdio_func *func = dev_to_sdio_func(dev);

brcmf_dbg(SDIO, "Enter\n");

+ if (func->num == 2)
+ return 0;
+
+ sdiodev = bus_if->bus_priv.sdio;
+
atomic_set(&sdiodev->suspend, true);

if (sdiodev->wowl_enabled) {
@@ -1164,9 +1170,16 @@ static int brcmf_ops_sdio_suspend(struct device *dev)
static int brcmf_ops_sdio_resume(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio_dev *sdiodev;
+ struct sdio_func *func = dev_to_sdio_func(dev);

brcmf_dbg(SDIO, "Enter\n");
+
+ if (func->num == 2)
+ return 0;
+
+ sdiodev = bus_if->bus_priv.sdio;
+
if (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)
disable_irq_wake(sdiodev->pdata->oob_irq_nr);
brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
-- 1.7.1


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